went to get a 7/8 MC today but the guy said he needs to know what datsun there off to order it as in there books it doesnt list a size just suit 180b suit 240k etc, he seams to think the 7/8 might be a 240k item but wasnt sure, can anyone confirm? cheers

_________________
-1969 1600 SR20

7/8" is from a 240K. But the one I got isn't a bolt on job to the 180B booster. I've been meaning to research it further as there has to be one that bolts up. The one I got is longer in the nose (before the flange) and won't fit back inside the booster. I got a spacer knocked up, but then the damn studs in the booster are too short. To replace the studs means opening the can... exspensive. I have a solution, but I'm not a big fan of it and I doubt an engineer would look at it favourably.
So, yeah, be interested to see what you find out.

_________________
Happiness is watching the race.... in your rearview mirror

cheers for that boyracer, do you have a pick of yours?

_________________
-1969 1600 SR20

Jasol.

Sometimes you might be able to do a search and all your prayers will be answered???

http://ozdat.com/forum/viewtopic.php?f= ... 94&start=0
http://www.ozdat.com/forum/viewtopic.php?f=31&t=6701
http://www.ozdat.com/forum/viewtopic.ph ... 82&start=0
http://www.ozdat.com/forum/viewtopic.ph ... &view=next
http://ozdat.com/forum/viewtopic.php?f= ... 7&start=15

_________________
1972 Datsun 1600, S14 SR20DET Engineered (204rwkW @ 17psi.)
viewtopic.php?t=6579
#SR20Datsun @SR20Datsun

cheers nik, sometimes i just forget about the search, ill remember for next time
ive read all those threads and just to clear things up
1/ i need the jb1133 correct?
2/ i read some have truoble fitting them to a 180b booster and some didnt? was there a solution? as i didnt read anything about fixing this issue.
3/as this will be used with disk/disk have i labelled the below pic corect?
cheers

_________________
-1969 1600 SR20

also while on the topic i was under the impresion my booster was a 180b but after looking on the maddat site mine has a differant vacum location. is it still a 180b or is it from another model?

_________________
-1969 1600 SR20

both look 180b, boosters to suit SSS model with su's probably have different vacc tube locations.
Mine is like yours with the tube out horizontal on the booster and i removed it that from my mates SSS 180B...

cheers nick

_________________
-1969 1600 SR20

There was mention of machining the spacer out to make the M/Cyl fit, I was told that's not a good idea as that spacer is holding the front seal on the booster in ?
The circlip is further from the end on the 7/8" than it is on standard, so it may go close to fitting if you took the end of the 7/8" cyl and spun out the spacer/adaptor.

_________________
Happiness is watching the race.... in your rearview mirror

I got mine out of a C series skyline, bought a rebuild kit for it and works fine, DS have 7/8 brand new for real cheap and you can even buy the kit with the reco booster and all.

_________________
"You stay classy OzDat"

I have reconed & modified 180B/120Y boosters with 7/8 master cylinders
for over 30 years.
Must have done 1000s.
Its just a minor job to do.
Adjusting the booster is the tricky bit.
The adaptor does not retain the booster & no mods to circlips if using the correct master cyl.
You have had bad info.

_________________
A little knowledge is a dangerous thing.
www.datsport.com

"R.I.P. Baz. 29 April 2022. Thank you for all your contributions to the Datsun community over the years. You will be missed." - OZDAT

Fair enough. So the question still remains as to which M/Cyl to use. From one of the posts 1600dave had a JB1133 7/8" M/Cyl and it didn't fit the booster ? Anyone got a part number that's known to work ?

_________________
Happiness is watching the race.... in your rearview mirror

I got mine off the C110 Skyline and just had to get the adapter plate between the booster and MC otherwise it wouldn't go in, the 180B slamm can booster has some lil lip that needs to be machined but since I was in a hurry I went back to the wreckers and got the little adapter and it all went in like a dream!!!

_________________
"You stay classy OzDat"

I have the JB1133 opened up the the alloy adapter and master bolted straight on. Have done multiple stops from 200+km's and I'm still alive and brakes are working farken great. End of story

_________________
1928 Model A CC Pickup

couple of minutes with a rat tail or 1/4 round file would have done the job.

_________________
A little knowledge is a dangerous thing.
www.datsport.com

"R.I.P. Baz. 29 April 2022. Thank you for all your contributions to the Datsun community over the years. You will be missed." - OZDAT